Is free trade really free?

Could you elaborate on the idea that free trade might not actually be as free as it seems? Are there any hidden costs or restrictions that often go unnoticed? And how do these factors affect businesses, consumers, and the global economy as a whole? Does the pursuit of free trade sometimes lead to unintended consequences, such as job losses or environmental degradation? Furthermore, how do different countries approach free trade agreements, and what are the potential benefits and drawbacks of such agreements? Ultimately, is the concept of free trade truly as straightforward and beneficial as it's often portrayed?